Sigma 4-15C, Руководство по эксплуатации

Страница: 34 / 95

Operating Manual SIGMA 4-15C, page 34 of 95
03/06
2.6.3 Rotor Monitoring
During programming the rotor part no. and if required the bucket part no. must be
entered. Two microprocessors check, if the entered speed or the gravitational
field is allowed for the rotor. Input errors are impossible (refer to point 9.3 "Entry
limitations"). After starting, during the start-up phase, the computer additionally
checks the identification of the rotor.
Attention: Please take care to enter the correct bucket part no. as the max.
allowable speed could be exceeded by entering an incorrect bucket. This is
not allowed.
If the rotor doesn`t correspond to the programmed rotor no., STOP is carried out
and an error message is displayed. Restarting the centrifuge is only possible
after reset and when the correct rotor number has been selected.
2.6.4 Standstill Monitoring
Opening of the centrifuge lid is only possible, if the rotor is at standstill. This
standstill is checked by the computer and also by an additional hardware circuit.
2.6.5 System Check
An internal system check monitors data transmission and the sensor signals with
regard to plausibility. In the event of an error, malfunctions are recognized with
utmost sensitivity, displayed as error message together with an error number,
and saved for service.
2.6.6 Ground Wire Check
For ground wire check there is a ground screw at the rear panel of the centrifuge.
A ground wire check can be carried out using an appropriate measuring
instrument.